Demo — inputs & output
Prompt structure inspired by Inspired by fal.ai H3 Guide
Add a Character in Sync with the Others
Insert an additional character matching group timing, blocking, and eyelines.
Who this is for
Roster fixes and ensemble ad revisions.
How this prompt is built
Read this first — once you see the pattern, you can write your own without starting from zero.
- Edit instruction
Add + sync constraint.
- Preserve
Camera and original cast unchanged.
Adapt it for your project
- Describe wardrobe for the new character.
- Specify screen position (left/right).
Where people mess up
- Desync on downbeats.
- Replacing instead of adding.
Full prompt (copy & edit)
In the reference video, add a new character who moves in sync with the existing group — matching step timing, claps, or choreography. Preserve camera motion and all original characters. The added character must not occlude leads unless specified.
New to Ref2VA? Read the MiniMax H3 Ref2VA prompt guide
Related prompts
Cat-to-Dog Replacement
Video editing with one-line substitution prompt
Prompt structure
Replace the cat in the video with a dog. Keep everything else in the shot stable: background, c…
Day-to-Night Relighting
Single-video relight instruction
Prompt structure
Change the lighting in the reference video from daytime to night. Preserve all subject motion, …
Multi-Element Scene Editing
Multi-line edit list on one source video
Prompt structure
In the reference video: replace the newspaper with a green hardcover book; replace the chair wi…
Product, Sign & Dialogue Replacement
Complex multi-swap edit on single clip
Prompt structure
In the reference video, replace the canned drink shown at the beginning with Coca-Cola. Change …